/* 头部 */

.top{
    height: 420px;
    position: relative;
    margin-bottom: 30px;
}
.head {
    position: absolute;
    height: 73px;
    border-bottom: 1px solid #acacac;
}

.navigation li a {
    color: #ffffff;
}

.navigation .item.on {

    border-bottom: 2px solid #ffffff;
    font-weight: bold;
}

.navigation .item.on a {
    color: #ffffff;
}

.head .btn1 {
    color: #ffffff;
    border: 2px solid #ccc;
}
canvas{
   position: absolute !important; 
   width: 100% !important;
   background-color: #1d1d1d;
}
.con{
    position: absolute;
    left: 352px;
    top: 263px;
    height: 290px;
}
.con .left{
    width: 620px;
    height: 100%;
    background: white;
    float: left;
}
.con .left .text{
    margin-top: 50px;
    position: relative;
    margin-left: 45px;
    width: 480px;
    height: 180px;
}
.con .left .text img{
    position: absolute;
    top: -65px;
}
.con .left .text  h2{
    margin-top: 120px;
    font-size: 24px;
    font-weight: normal;
    color: #181818;
    margin-bottom: 22px;
}
.con .left .text p{
    line-height: 25px;
    font-size: 14px;
    color: #666666;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
    overflow: hidden;
}
.con .right{
    float: right;

}
.con .right img{
    height: 290px;
    width: 580px;
}
.brief{
    background-color: #f8f9fb;
    height: 1418px;
    padding-top: 180px;
}
.jj{
    height: 175px;
    position: relative;
    margin-bottom: 50px;
}
.brief .jj img{
    margin-bottom: 24px;
}
.jj p{
    font-size: 14px;
    color: #181818;
    line-height: 24px;
}
.jj div{
    position: absolute;
    right: 5px;
    font-size: 12px;
    color: #666666;
}
.jj div::before{
    content: "";
    display: inline-block;
    width: 10px;
    height: 3px;
    background-color: #1271ef;
    position: absolute;
    left: -15px;
    top: 50%;
}
.shouyi h3{
    font-size: 24px;
    color: #181818;
    font-weight: normal;
    margin-bottom: 30px;
}
.shouyi p{
    margin-bottom: 58px;
    font-size: 14px;
    color: #000;
    line-height: 24px;
}
.shouyi img{
    width: 1200px;
    height: 700px;
}